public abstract class AbstractTraceListener extends Object implements TraceListener
| Constructor and Description |
|---|
AbstractTraceListener() |
| Modifier and Type | Method and Description |
|---|---|
void |
close()
Called at end
|
void |
endCurrentItem(Item item)
Called after a node of the source tree got processed
|
void |
enter(InstructionInfo info,
XPathContext context)
Called when an instruction in the stylesheet gets processed
|
String |
escape(String in)
Escape a string for XML output (in an attribute delimited by double quotes).
|
CodeInjector |
getCodeInjector()
Get the associated CodeInjector to be used at compile time to generate the tracing calls
|
protected abstract String |
getOpeningAttributes() |
PrintStream |
getOutputDestination()
Get the output destination
|
void |
leave(InstructionInfo info)
Called after an instruction of the stylesheet got processed
|
void |
open(Controller controller)
Called at start
|
void |
setOutputDestination(PrintStream stream)
Set the output destination (default is System.err)
|
void |
startCurrentItem(Item item)
Called when an item becomes the context item
|
protected abstract String |
tag(int construct) |
public CodeInjector getCodeInjector()
public void open(Controller controller)
open in interface TraceListenercontroller - identifies the transformation controller, and provides the listener with
access to context and configuration informationprotected abstract String getOpeningAttributes()
public void close()
close in interface TraceListenerpublic void enter(InstructionInfo info, XPathContext context)
enter in interface TraceListenerinfo - gives information about the instruction being
executed, and about the context in which it is executed. This object is mutable,
so if information from the InstructionInfo is to be retained, it must be copied.public String escape(String in)
public void leave(InstructionInfo info)
leave in interface TraceListenerinfo - gives the same information that was supplied to the
enter method, though it is not necessarily the same object. Note that the
line number of the instruction is that of the start tag in the source stylesheet,
not the line number of the end tag.protected abstract String tag(int construct)
public void startCurrentItem(Item item)
startCurrentItem in interface TraceListeneritem - the new current item. Item objects are not mutable; it is safe to retain
a reference to the Item for later use.public void endCurrentItem(Item item)
endCurrentItem in interface TraceListeneritem - the item that was current, whose processing is now complete. This will represent
the same underlying item as the corresponding startCurrentItem() call, though it will
not necessarily be the same actual object.public void setOutputDestination(PrintStream stream)
setOutputDestination in interface TraceListenerstream - the output destination for tracing outputpublic PrintStream getOutputDestination()
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